What are they thinking? Well, I'm no mindreader, but since they gouge 10% FVF on the bid price and not on the postage, I'm damn sure I know what they're thinking.
But if that's how they want to do business, we have a choice to take it or leave it. What winds me up is, as happened to me recently, when I was temporarily suspended, for a totally trumped-up reason. And of course, no possibility of a dialogue with a sane human being.